CS4430 Network Security (2024-2025)

This course explores the principles and practices of securing computer networks, including topics such as cryptography, network protocols, intrusion detection, and ethical hacking.

Assignments Overview

Below is a list of all the assignments for the course, along with their respective weights toward the final grade:

Assignment Number	Title/Topic	Weight (%)
Assignment 1	Docker & Scapy Tutorial (Not Graded)	0%
Assignment 2	Link Layer Security	10%
Assignment 3	Network Layer Security	10%
Assignment 4		10%
Assignment 5		10%
Assignment 6		25%
Assignment 7		25%

Grading Rubric for Assignments

Below is the detailed grading rubric for each assignment and sub-assignment in the course.

---

Assignment 2: Link Layer Security

2.1: ARP Spoofing

Due Date: May 10, 18:00
Environment: arp_poisoning.zip

Grading Rubric:

• The student successfully poisons the ARP cache of both hosts – 25 points
• The student is able to capture packets continuously and print their IP addresses and contents – 10 points
• The student successfully restores the ARP table – 15 points

---

2.2: VLAN Hopping

Due Date: May 10, 18:00
Environment: double_tag.zip

Grading Rubric:

• The student is able to generate and send a double-tagged Ethernet frame – 10 points
• The Ethernet frame is received and correctly processed by host02 – 40 points

---

Assignment 3: Network Layer Security

3.1: IP Spoofing

Due Date: May 16, 18:00
Environment: ip_spoofing.zip

Grading Rubric:

• The student sends an ICMP packet with a spoofed source address – 5 points
• The student implements a functional attack and opens the port – 10 points
• The student retrieves and prints the secret – 5 points

---

3.2: Data Exfiltration using ICMP

Due Date: May 16, 18:00
Environment: icmp_exfiltration.zip

Grading Rubric:

• The student sends ICMP packets with payload to the destination host – 5 points
• The file is correctly read, transmitted, received, and saved – 25 points
• During transmission, the file is encrypted and then decrypted – 10 points

---

3.3: ICMP Covert Channel

Due Date: May 16, 18:00
Environment: icmp_covert.zip

Grading Rubric:

• The student transmits ICMP packets passing through the firewall – 5 points
• The student manipulates unused parts of the header and transmits packets – 10 points
• The student successfully transmits the message and reconstructs it on the receiving end – 25 points

---

Assignment 4:

---

Assignment 5:

---

Assignment 6:

---

Assignment 7: